Lookup method at form level

1. Writing lookup method for a field at datasource level

2. Written code

public void lookup(FormControl _formControl, str _filterStr)
{
 
    SysTableLookup          sysTableLookup;
    ;

    //Create an instance of SysTableLookup with the form control passed in
    sysTableLookup = SysTableLookup::newParameters(tablenum(DAPInsuranceLevels),          _formControl);

    //Add the fields to be shown in the lookup form
    sysTableLookup.addLookupfield(fieldnum(DAPInsuranceLevels, levelid), true);
    sysTableLookup.addLookupfield(fieldnum(DAPInsuranceLevels, Description), true);


    // Perform lookup
    sysTableLookup.performFormLookup();
}

3. Output at form level